318 Head Opinions

PlumCrazyDuster, thats what those 302 heads are and they have 56-62cc chambers already and are a bolt on. People are telling me that I'll get better flow with the Magnums though. The only thing with the Magnums, aside from changing lifters, pushrods, etc., is that they will have to be milled on both sides to get compression up to mid 9s, plus intake will have to be replaced or Performer will have to be drilled to fit. I wish I knew how much better over the 302s that the Magnums would be.